Answer:
A) Emma earns more per hour.
B) Bella earns more per week.
Explanation:
Emma works 30 hours per week and earns a monthly salary of $2370.
![\texttt{Money earned by Emma per week}=(2370)/(4)=592.5\$](https://img.qammunity.org/2020/formulas/mathematics/high-school/tkw4c39wimzrvqr5gft0vtjdg6g4jxvdek.png)
![\texttt{Money earned by Emma per hour}=(592.5)/(30)=19.75\$](https://img.qammunity.org/2020/formulas/mathematics/high-school/zkw2tqkwvimctecwzzvgye2npbx61bc5ox.png)
Belle earns $4.20 every 14 minutes and works 35 hours per week.
![\texttt{Money earned by Bella per week}=(4.20)/(14)* 60* 35=630\$](https://img.qammunity.org/2020/formulas/mathematics/high-school/lwk6rsgbiql1ket83s532rzmddl9wlu2zk.png)
![\texttt{Money earned by Bella per hour}=(630)/(35)=18\$](https://img.qammunity.org/2020/formulas/mathematics/high-school/3e0hlq8j0bnsfyl59nmu7fyc50brdoc7na.png)
A) We need to find who earns more per hour
Money earned by Emma per hour = 19.75 $
Money earned by Bella per hour = 18 $
Emma earns more per hour.
B) We need to find who earns more per week
Money earned by Emma per week = 592.5 $
Money earned by Bella per week = 630 $
Bella earns more per week.